This video is a tutorial teaching you how to use a single SD card for both running Windows and Steam OS game library.

Part 3 of the dual boot video if you haven't got Windows installed to an SD card yet:
[ Ссылка ]

Commands used in the tutorial:
Set password for the deck account:
passwd

List all block (disk-like) devices:
sudo lsblk

Format new partition (replace the LAST argument with the device file of your partition):
sudo mkfs.ext4 -m 0 -O casefold -E nodiscard -F /device/file/of/your/partition

Edit fstab:
sudo nano /etc/fstab
After finish editing, press Ctrl-O to overwrite the content, then Ctrl-X to quit nano.
Press Ctrl-X without Ctrl-O to discard the changes you made if you accidentally removed other parts of the file.

New line to be added in fstab (replace the FIRST parameter with the device file of your partition):
/device/file/of/your/partition /run/media/mmcblk0p1 ext4 defaults,nofail,users,exec,rw,auto 0 2

Show currently mounted partitions:
df -h

The following two are very dangerous commands. Make sure you put the right path!!!
Change the ownership of the root directory of the partition (replace the LAST argument with the MOUNTING POINT of your partition, if you completely followed my fstab modification, it should be /run/media/mmcblk0p1):
sudo chown 1000:1000 /run/media/mmcblk0p1

Make sure the partition is absolutely empty (replace the LAST argument with the MOUNTING POINT of your partition, FOLLOWED BY /*, if you completely followed my fstab modification, it should be /run/media/mmcblk0p1/*):
sudo rm -rf /run/media/mmcblk0p1/*

Music: Both of US, by madiRFAN

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